Grill lid adjustable support



FIG. 1 is a right elevation view of a grill lid adjustable support showing our new design, the opposite side being a mirror image of the shown;

FIG. 2 is a rear elevation view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is an isometric view thereof.

The broken lines in the drawings depict environmental subject matter only and form no part of the claimed design. 

The ornamental design for a grill lid adjustable support, as shown and described. 